package com.kuang.config;

import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.sql.DataSource;
import java.util.HashMap;

@Configuration
public class DruidConfig {

    @ConfigurationProperties(prefix = "spring.datasource")
    @Bean
    public DataSource druidDataSource(){
        return  new DruidDataSource();
    }

    //后台监控功能  web.xml ServletRegistrationBean
    //因为springboot 内置了servlet容器所以没有web.xml , 替代方法: ServletRegistrationBean
    @Bean
    public ServletRegistrationBean statViewServlet(){
        ServletRegistrationBean<StatViewServlet> bean = new ServletRegistrationBean<>(new StatViewServlet(), "/druid/*");

        //后台需要有人登录 账号密码配置
        HashMap<String, String> initParameters = new HashMap<>();

        //增加配置
        initParameters.put("loginUsername","zls"); //登录key是固定的loginUserName  loginPassWord
        initParameters.put("loginPassword","123");

        //允许谁可以访问
        initParameters.put("allow","");

        //禁止谁可以访问 initParameters.put("kuangshen","127.0.0.1");

        bean.setInitParameters(initParameters); // 设置初始化参数
        return  bean;
    }

    //filter
    @Bean
    public FilterRegistrationBean webStatFilter(){
        FilterRegistrationBean bean = new FilterRegistrationBean();

        bean.setFilter(new WebStatFilter());

        //可以过滤那些请求
        HashMap<String, String> initParameters = new HashMap<>();

        //这些东西不进行统计
        initParameters.put("exclusions","*.js,*.css,druid/*");

        bean.setInitParameters(initParameters);
        return bean;
    }

}
